Improvement in machines for rounding- barrel-heads



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OWE N REDMOND,i 0E ROCHESTER, NEW YORK.

Lette/rs Patent No. 84,509, dated December 1, 1868 antedated November* 19, 1868. l

IMPROVEMENT IN MACHINES FOR ROUNDING- BARREL-HEADS.

The Schedule referred to :ln these Lettera;Patent and making part of the same.

county of Monroe, and State of New York, have invented new and useful Improvements on Barrel-Head- Rounding Machine; and I do hereby dec-lare that the following is a fulland exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, in which- Figure 1 represents a plan or top view of my machine;

Figure 2, afront view of the same; and

Figure 3, a View of the index by which the diameter to be cutis gauged.

It is found, in practice, that to cut a barrel-head completely all round, with a 'circular saw, it is necessary that the wood to be cnt perform more than a complete revolution every time that a head is finished, inorder to'allow for the oblique cnt which the saw makes'on entering the stud; and

The object of my invention is to provide a machine which will bring the wood up tothe saw, to be cut, retain it there until it has made more than a complete revolution, and then withdraw it from the saw, causing the parts to be in proper position for the adjustment of a new head; to which end My improvements consist in a suitable arrangement of mechanism for retaining the wood to be cut against the saw, until the wood has performed more than a complete revolution, and afterwards withdrawing it from the saw.

In th'e accompanying drawings, A represents the B represents a movable frame or carriage, which is pivoted to the frame A by the links B; and B2, a spiral spring, whose tendency is to retain itin the position shown by the drawings.

A saw-mandrel, G, to which the saw Gl is secured, rotates in bearings on an adjustable frame, G3, and is set at such an angle with the carriage B as will produce the' desired bevel upon the edge of the barrelu head. The saw-mandrel has upon it a balance-pulley, G2, which carries the belt which gives motion to the parts. The screws g gl pass through slots in the bearings g g of the mandrel, to secure the same to the adjustable frame' G3, which enables the'jposition of the saw to be -varied for cutting` different thicknesses of heads. The frame G3 is secured to the main frameA by.screws g2, passing through slots in G3. This arrangement enables the saw to be adjusted for cutting different diameters of heads. An index, J, attached to the ame A, in conjunctionwith a gauge, J', upon the adjustable frame G3, enables the attendant to set the saw in proper position for cutting` any required diameter.

The links B1, which are of equal length, are pivoted at one end to the frame A, and. at the other'tocthe carriage B, which maintains the carriage parallel to the front of the frame, and always at the same angle with the saw G, whatever its distance therefrom may be. A vertical shaft, D, is mounted in bearings in the frame, near the rear thereof, and rotated by means of the cord K, which passes over the pulley G2, guidepulleys It kl, and pulley d', on the shaft D. The guidepulleys k It" have their bearings in a shell or casting, L12, near the bottom of the frame. They are set at an angle with eachother, corresponding with their distance from the shaft D and the diameter of the pulley d', and afford a convenient means of changing the direction of the cord K.

Shafts C C rotate in bearings upon the carriage B, having disk-clamps c c secured thereon. The shaft C carries a worm-wheel, c2, which gears with a screw, d, upon the shaft D, whenever the carriage 'is moved into sulicient proximity thereto. This is done by means of a foot-lever, H, to which a cord, h, is attached, which 4passes over a pulley, h1, on the frame, and is secured to a ring, h2, in the'carriage B. The carriage is held in position for; the screw d and worm-wheel c2 to be in gear, Iby a stop, l1, on its lower surface, engag. ing in a notch, f, in the spring-latch F.

The shaft C can be moved endwise in its bearings,

for the purpose of pressing the clamps c cl together. This is done by means of acurved lever, E, pivotedto the carriage, and having its curved end bearing against a roller, E', on the frame, which, when the carriage is moved up towards the saw, causes the end of an adjustable screw, e, in the lever to press against the end of the shaft C, and force it up towards C. A spring, c5, draws the shaft `back when the pressure from the lever E is discontinued v The clamp c is provided with points, to hold the wood to be cut upon one of its sides, and with a weight or drag, c6, and pin, c7, upon the other.4 A curved stop, b', is pivoted to the carriage, in such manner that it will move upon its fulcrum, and allow the pin c7 to pass when the 'shaft C is revolving in one direction, but hold it iirmly from passing when the shaft revolves in the opposite direction.

A loop'or. long staple, c3, is secured upon the side of the worm-wheel c?, in which the end of a lever, 0:, which swings freely upon the shaft O, moves. .The

length of this loop is the measure, or nearly so, of

the distance which the clamps will travel more than a revolution while the barrel-head is being\` sawed.

I is a spout for carrying olf the heads as they are n- A ished.

The operation of the machine is as follows: The saw-mandrel being putin rotation by a belt from the prime m ver or its connections, the barrel head to be'k sawed i placed between the clamps c c, and the attendant, pressing with his foot upon the lever H, the clamps are pressed'together, holding vthe wood firmly between them, and the carriage moved up towards the saw, nntilin proper position for the head to be cut, when the screw d gears with the worm-wheel c2, and imparts revolution to the shafts O C', andconsequently the clamps and wood held between them.

The carriage is held in this position by the stop b and spring-latch F.

When, in the rotation of the shaft C, the end of the lever c4 attains the vertical position above the shaft, it drops upon the point f ofthe spring-latch F, but without suiieient force to disen gage the latter from the stop b, until, in the continued revolution of the shaft, the staple ca strikes against it,V when it presses down the spring-latoh F, disengaging the stop b from the notehf,a11d the spring Bz draws the carriage B away from the saw.

At the moment when the worm-wheel lis drawn outof gear with the serew d, the weight c draws back the clamp c and shaft C, until the pin c7 strikes the stop b', and further motion is prevented. At the same time the lever c* drops down by'its own gravity, until it strikes the lower end of the loop or staple c3, when it is below the point f' of the spring-latch, and the parts are in proper position to repeat the operation.

Having thus fully described my improved barrelhead-rounding machine,

What I elaim thereinV as new, and desire to secure by Letters Patent, s'-

The combination of the loop or staple o and lever o* with the spring-latch F, when arranged and operating substantially as described, for the purpose ofoausing more than a complete revolution of the clamps c c to be made during the time that each barrel-head is being sawed. Witnesses:

E. M. REDMOND, EDMUND REDMOND.

OWEN REDMOND. 

